In a city that prefers performance to practice, the Somnus Institute promises innovation-and delivers a scandal. After a young woman dies on the Institute's watch, acting director Clara Wren inherits a building full of procedures, donors, and doors that have learned to lie. The Board wants optics. The press wants spectacle. Clara wants nouns: who signed, who moved, who knew. As old codes and maintenance calendars resurface, a pattern emerges: clever workarounds hiding in plain sight, a room that transfers more than sleep, and an institution that confuses reputation with medicine. With the help of a forensic-minded colleague, a photographer who refuses to delete what she saw, and a night-shift listener hired to notice small wrongs before they grow, Clara turns away from invention and toward responsibility. What follows isn't a chase; it's something harder-policy made human, routine made brave. THE GIRL WHO DREAMED IN BLUE is a literary thriller about witness and maintenance, set against a London that keeps its secrets tidy. Fans of Tana French and Emily St. John Mandel will recognize the quiet voltage: ethical suspense, precise prose, and characters who earn their courage by doing the boring, necessary things. When every dream hides a truth-and every truth demands a price-Clara must decide what rooms deserve, and whether she's willing to keep paying.